> I start reading the code, and pretty soon it starts messing with the clipboard, and it even pulls in Flash
I admit to thinking the dependency overkill for random arrows was part the joke. A la https://github.com/jezen/is-thirteen
In An opensource alternative for the TSA’s $300k line assistantjezen
is-thirteen
JavaScript2016–2019
jezen / is-thirteen
is-thirteen
Check if a number is equal to 13.
18Distinct people
18Mentions
0Explicit recommenders
6.2KGitHub stars
What to know before exploring
What it is
Check if a number is equal to 13.
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 2:04:58 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year18 dated mentions
Observed mentions: 2016-03-27 05:32:14 UTC to 2019-06-27 16:43:02 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 9 | 1 | 8 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 8 | 2 | 6 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 1 | 0 |
From the project README
An excerpt from the repository, fetched Nov 13, 2026.
Read the project’s introduction
Special thanks to @casdr for the logo
is-thirteen
An npm package to check if a number is equal to 13.
Installation
npm --save i is-thirteen
or
yarn add is-thirteen
Usage
const isThirteen = require('is-thirteen');
// PLEAS READ THE SOURCE CODE BECAuse we moved fast and broke things
i̶s̶T̶h̶i̶r̶t̶e̶e̶n̶(̶2̶5̶)̶;̶ ̶/̶/̶ ̶f̶a̶l̶s̶e̶
i̶s̶T̶h̶i̶r̶t̶e̶e̶n̶(̶1̶3̶)̶;̶ ̶/̶/̶ ̶t̶r̶u̶e̶
const is = require('is-thirteen');
// Now with elegant syntax.
is(13).thirteen(); // true
is(12.8).roughly.thirteen(); // true
is(6).within(10).of.thirteen(); // true
is(2011).yearOfBirth(); // true
// check your math skillz
is(4).plus(5).thirteen(); // false
is(12).plus(1).thirteen(); // true
is(4).minus(12).thirteen(); // false
is(14).minus(1).thirteen(); // true
is(1).times(8).thirteen(); // false
is(26).divideby(2).thirteen(); // true
Test
npm test
License
WTFPL
A helpful tool by Jezen Thomas with helpful
help from Gytis Daujotas and many fine folk.
Read the full README on GitHubWhat Hacker News says
9 sourcesPfft.. So far they've all missed Octal support (015). Relax, everyone, I took care of it: https://github.com/jezen/is-thirteen/pull/259/
In Jezen/is-thirteen: Check if a number is equal to 13Nah, they do case insensitive matching: https://github.com/jezen/is-thirteen/blob/master/index.js#L1...
In Jezen/is-thirteen: Check if a number is equal to 13Half the issues suggest the use of actual NPM modules, and I'm at a loss to tell which ones are jokes. For example: "Replace noop3 with noop4 (also keep an eye out for noop5)" https://github.com/jezen/is-thirteen/issues/151
In Jezen/is-thirteen: Check if a number is equal to 13commit 512813f
Added Klingon translation and and test for word "thirteen"
https://github.com/jezen/is-thirteen/commit/512813f
In Jezen/is-thirteen: Check if a number is equal to 13https://github.com/jezen/is-thirteen/commit/b112acdf2d64f13d...
This whole thing is hilarious.
In Jezen/is-thirteen: Check if a number is equal to 13My first reaction was, "Haha. That's fun code-as-parody."
Then I looked at the unit tests. [1] Now my reaction is more like, "Your commitment to this bit is both admirable and slightly disturbing."
[1] https://github.com/jezen/is-thirteen/blob/master/test.js
In Jezen/is-thirteen: Check if a number is equal to 13Jezen/is-thirteen: Check if a number is equal to 13
97 points · Open discussionThe real question is: How does one live without is-thirteen?
https://github.com/jezen/is-thirteen
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